A pickup truck's weight depends on the model, make and size of the truck. Normally, a pickup truck would weigh from 1750 lbs to 4550 lbs, but even that is just a guess since the exact numbers vary from one truck to the next. A pickup truck's weight depends on the model, make and size of the truck.
rods and cones. The photoreceptor cells of the retina. They are between the pigment epithelium and the bipolar layer of neurons. The rods contain rhodopsin, which is stimulated by light; the cones contain one of three other photopigments, which are stimulated by various wavelengths of visible light (colors).
The sensory receptors for the eyes are the rods and cones in the photoreceptors contained in the the retina.here are two types of cells that act as photoreceptors in the eye: ro â¦ ds and cones. Rods detect only the presence or absence of light without distinguishing between colors, thus giving black and white vision (as at night).